Evidence map›Paper›PMID 39653022›Full record

ArticleOphthalmic research2025

Long-Term Evaluation of Ocular Surface and Meibomian Gland Function after Laser-Assisted in situ Keratomileusis Surgery.

Kenneth Ka Hei Lai, Zhichao Hu, Jamie Tsun Chiu, Fatema Mohamed Ali Abdulla Aljufairi, Jake Uy Sebastian, George Pak Man Cheng, Wilson Wai Kuen Yip, Alvin Lerrmann Young, Clement Chee Yung Tham, Calvin Chi Pui Pang and 1 more

Abstract read
In one paragraph

Article in Ophthalmic research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Kenneth Ka Hei LaiDepartment of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, Hong Kong, China.
Zhichao HuDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, China.
Jamie Tsun ChiuDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, China.
Fatema Mohamed Ali Abdulla AljufairiDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, China.
Jake Uy SebastianDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, China.
George Pak Man ChengDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, China.
Wilson Wai Kuen YipDepartment of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, Hong Kong, China.
Alvin Lerrmann YoungDepartment of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, Hong Kong, China.
Clement Chee Yung ThamDepartment of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, Hong Kong, China.
Calvin Chi Pui PangDepartment of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong, China.
Kelvin Kam Lung ChongDepartment of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, Hong Kong, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionLaser-assisted in situ keratomileusis (LASIK) is a common refractive surgery. But it may lead to temporary dry eye due to reversible damage to the corneal subbasal nerve plexus. However, evidence on chronic ocular surface changes are unclear. This study reports the ocular surface changes, partial blinking rates, and meibomian gland statuses in eyes that underwent LASIK for at least 48 months.

methodsCross-sectional, matched case-control comparison study, including 48 post-LASIK patients and 48 sex-, age-, smoking-, and axial length-matched healthy controls, recruited from a community eye screening program. Outcome measures include anterior segment clinical findings, keratographic and meibographic imaging.

resultsTotally, 48 right eyes of 48 post-LASIK Chinese patients (39 females, 2 smokers) were analyzed with 48 right eyes of 48 matched healthy controls. The mean age at the time of ocular surface examination was 50 ± 11 years, and the axial length 26±1 mm. Post-LASIK eyes had a lower quality of meibum (p = 0.008) compared to healthy controls. Post-LASIK eyes were associated with a shorter Schirmer's test (p = 0.03). The ocular surface disease index (OSDI) score was higher in post-LASIK patients (p = 0.00001). Other anterior segment examination parameters, partial blinking rate, meibomian gland dropout, lipid layer thickness, noninvasive tear break-up time, and tear meniscus height were comparable between the 2 groups.

conclusionsUp to 75% of post-LASIK patients complained of on-going, chronic dry eye symptoms. Post-LASIK eyes were associated with a reduced aqueous tear production. Post-LASIK patients with chronic dry eye symptoms are advised to have periodic ocular surface evaluation. Treatments might be considered in patients with poor tear film stability.

Indexed as

CorneaDry Eye SyndromesKeratomileusis, Laser In SituLasers, ExcimerMeibomian GlandsMyopiaTearsAdultBlinkingCase-Control StudiesCross-Sectional StudiesFemaleFollow-Up StudiesHumansMaleMiddle AgedDry eye diseaseLaser-assisted in situ keratomileusisMeibomian glandRefractive surgery

Identifiers

PMID39653022
PMCPMC11844694

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.